For most of us, the Roku (no matter Roku 4, Roku 3, Roku 2 or the original Roku) is the combination of on-demand media and easy access to our own extensive media library that made Roku's case. If you have lots of BD/DVD ISO image files and a Roku device, chances are you want to play the ISO files through the Roku 4/3/2 from NAS/USB or have Plex streaming them to Roku. When you try to do this, you'll see a mixed response on Roku. Can the Roku play ISO files? Here is my answer. ISO is not one the Roku supported formats. Officially, the Roku only supports H.264 MKV and MP4/M4V video, meaning that's the only media recognized over USB and Plex' Direct Play. Luckily, this problem is easy to solve - all you need is a tool that can read the ISO files and convert ISO image files to a fully compatible format with the Roku 4/3/2.
There are many programs out there that allow you to convert and transcode these ISO contents for use them with your Roku 4/3/2. If you are seeking for the best video output quality, fastest video conversion speed, and the most formats supported, EaseFab Video Converter Ultimate will be your best choice. With it, you can fast convert ISO, Video_TS, IFO, BDMV, etc. disk image formats, as well as DVD/Blu-ray discs and AVI/MKV/MPG/TiVo/VOB/FLV, etc. to Roku 4/3/2 compatible video format while keeping the original quality. If you're using a Mac, simply turn to Video Converter Ultimate for Mac (macOS Mojave compatible), which has the same function as the Windows version.
Just download, install and launch this great ISO to Roku converter and then follow the tutorial to play ISO files through the Roku 4/3/2 smoothly.
Simple Steps to Stream and Play ISO files through the Roku 4/3/2
Step 1. Add ISO image files
Run the program, and then click "Load Disc" button to import your source media files, you can import ISO, IFO, Video_TS, BDMV and other disk image formats to the program for convert. Of course, you can click "Add Video" button to load common video formats.
Step 2. Choose the output format
Click "Profile" and select MP4 from Common Video as the output format. The reason mp4 is the target format is that by packing the videos in mp4, the file size will be reasonable small and the video quality remains.
Tip - Advanced Settings: With the right settings you can retain the quality of the original DVD while also saving space. This is particularly helpful when streaming over your network. Simply click Settings bar and you can tweak the settings to your satisfaction and even save it as preset.
Step 3. Start the conversion
Finally, hit the "Convert" button at the bottom of the main interface to start the conversion. It will automatically convert ISO to Roku compatible video files.
After the conversion, you can hit "Open" button to quick locate the converted videos; now you can stream ISO files to Roku 4/Roku 3/Roku 2 via Plex Media Server/from USB device at ease.